Dogs Never Lie About Love : Reflections on the Emotional World of Dogs

When Elephants Weep: The Emotional Lives of Animals

For the Love of a Dog: Understanding Emotion in You and Your Best Friend

The Pig Who Sang to the Moon: The Emotional World of Farm Animals

The Emotional Lives of Animals: A Leading Scientist Explores Animal Joy, Sorrow, and Empathy — and Why They Matter

Beasts: What Animals Can Teach Us About the Origins of Good and Evil

The Nine Emotional Lives of Cats: A Journey Into the Feline Heart

Beyond Words: What Animals Think and Feel

Devoted: 38 Extraordinary Tales of Love, Loyalty, and Life With Dogs

Animal Lessons: Discovering Your Spiritual Connection with Animals